Report #2843973

Received Jun 5, 2025

A note on interpretation. VAERS reports are unverified and may be incomplete or coincidental. A report does not establish that a vaccine caused an event, and counts should not be used to calculate incidence or infer causation. Full disclaimer

Overview

Sex: Male
Age: 17 yrs
State: TX
Recovered: Unknown
Vaccinated: Jun 3, 2025
Onset: Jun 3, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
MNQ	MENINGOCOCCAL CONJUGATE (MENQUADFI)	SANOFI PASTEUR	UNK	U8494AA	IM / LA

Symptoms (4)

Immediate post-injection reactionInjection site reactionMuscle spasmsSyncope

Symptom narrative

Deltoid muscle cramps were observed by the pharmacist on the injection arm as soon as the 0.5 ml of intramuscular MenACWY shot started. The patient fainted about a minute after receiving the shot. The patient was hold and placed in supine position on the floor, but quickly recover within a minute of fainting. After that the patient was alert and able to talk. He was closely observed by the pharmacist for 15 minutes with no symptoms and let go home at his request. His mom said he had once fainted after an injection but not with a vaccine. I think it could well be a vasovagal syncope rather than a reaction to the vaccine.